Dr. Jensen also described the problem associated with mucoid plaque (thickened intestinal mucus) as: "The heavy mucus coating in the colon thickens and becomes a host of putrefaction. The blood capillaries to the colon begin to pick up the toxins, poisons and noxious debris as it seeps through the bowel wall. All tissues and organs of the body are now taking on toxic substances. Here is the beginning of true autointoxication on a physiological level."
The bottom line is that it is unlikely the senna was responsible, and on top of that, I am not advocating anything close to the amount of senna consumed when drinking multiple cups of dieter's tea. In the colon corrective we're now talking about, senna, along with the aloe and cascara sagrada, are merely colon cleansing stimulants for proper colon function. No one has ever suffered a problem from them when used in that regard.
A good herbal-based, intestinal corrective provides both cleansing and healing to the entire gastro-intestinal system. It stimulates peristalsis (the muscular movement of the colon). It halts putrefaction and disinfects, soothes, and heals the mucous membrane lining of your entire digestive tract. Entirely herbal, with no harsh, habit-forming chemicals, an effective activating formula will also help improve digestion, relieve gas and cramps, increase the flow of bile (which in turn cleans the gallbladder, bile ducts, and liver), destroy Candida albicans overgrowth and promote healthy intestinal flora, destroy and expel intestinal parasites, and increase gastrointestinal circulation. The herbs used in this type of formula are also antibacterial, antiviral, and antifungal.

Indications Occasional Detox and Colon Cleansing to support digestive health, helps with constipation, bloating, removes toxins and helps increase energy levels. Please see ingredients to ensure there are no potential allergens — BioSchwartz Colon Cleanser & Detox is the MOST NATURAL and EFFECTIVE detox cleanse on the market. Our pure colon detox is intended for adults who are serious about taking control of their diet and health and detoxifying their body in a natural, safe and effective way. It works perfectly for both women and men. Colon cleansing & detox, to support constipation relief, digestive health and regular bowel movements

Because your colon processes food waste, it is constantly bombarded by toxins. These may include pesticides from non-organic foods, toxins found in processed meats, or even environmental pollutants in the air and water. Left unchecked, these may accumulate and contribute to unwanted colon issues. Colon cleansing is one of the best ways to encourage your body’s internal detoxification processes and eliminate harmful organisms.

Your body can’t digest these foods, so they sit in your colon as old, rotten feces and mucus and impair the digestion of the healthier foods you eat. Pretty soon you’re bloated, tired all the time, depressed, and catching every bug you come in contact with. It comes as no surprise then, according to the National Institutes of Health, up to 70 million Americans are dealing with digestive problems like Constipation or Irritable Bowel Syndrome.

Many colon cleanse practitioners lose weight because they clear waste products from their intestines. During a colon cleanse, you may have five or six bowel movements per day. These frequent bowel movements eliminate the waste that normally builds up in your digestive tract. According to the commercial Best Colon Cleanse website, some people lose 10 or more pounds during the cleansing process.

It also uses more neurotransmitters to digest and process this junk food, leading to an imbalance in your “feel good” hormones, if not a deficiency. When you are under stress, these hormones are signaled by the brain to “speed up” and this chemical surge causes everything from anxiety, insomnia, trouble swallowing, and the “butterflies” in your stomach, to diarrhea, cramping, and neurotransmitter deficiencies. Colon cleansing: a popular, but misunderstood natural therapy